Peters



(No ModelL) v T. KENNEDY.

PUMP.

No. 331,976. Patented Dec. 8, 1885.

- PETERS. Pboin-Lxlhogflphur, Washinglnm DA;

UNITED STATES PATENT omen THOMAS KENNEDY, OF PHILADELPHIA, PENNSYLVANIA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 331,976, dated December 8, 1885.

Application filed May 28, 1885.

.To aZZ whom it may concern:

Be it known that I, THOMAS KENNEDY, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Pumps, of which the following is a specification.

My invention relates to a small portable hand-pump, such as is used for forcing beer and other liquids, the object of my invention being to so construct such a pump and the plunger operating devices of the same, that the plunger can be readily removed from the barrel of the pump at any time without dis turbing said barrel, and can be as readily insorted in the barrel again when desired.

In the accompanying drawings, Figure 1 is a side view, partly in section, of a pump with my improvements; Fig. 2, an enlarged section of the upper portion of the pump-barrel and plunger, the latter being detached from the barrel, and part of the plunger-rod being shown in elevation; and Fig. 3, a section on the line 1 2, Fig. 1, also on alargor scale than said figure.

A is the base, to the rear of which is secured a flanged plate, B, at the lower end to a curved standard, 13, the upper front end of the latter having a detachable plate,D,secured thereto by means of a bolt, a, the stem of which passes through a slot, 2), in the plate, and is furnished with a thumb-nut, (2, bearing on said plate. In the outer portion of the plate is an opening forming a guide for the plungenrod F of the pump which has at the lower end the usual plunger,G,adapt-ed to the barrel H of the pump, a flange at the base of said barrel being secured by bolts f to the base A near the front end of the same. An operating-lever, J, is connected by a transverse bolt, 9, to the plunger-rod F, this lever being hung to a pair of links, K, which are pivoted to a stud, h, on the standard 13. The lever J'" is connected to the links K by means of a transverse bolt, m, to the threaded end of which is adapted it thumb-nut, a, as shownin Fig. 3.

WVhen it is desired to examine or repair the plunger of the pump, or to gain access to the interior of the barrel H,the thumb-nuts d and n are removed, thus permitting the withdrawal of the bolts a and m, and thereby freeing the Serial No. 166,959. (No model.)

lever J from the control of the links K, and permitting the removal of the guide-plate D from the standard B, the lever and plungerrod being then lifted, so as to withdraw the plunger from the barrel of the pump, the top 1) of which is detachable for the purpose of permitting such withdrawal.

After the examination 'or repairs have been completed the plunger can be again inserted into the barrel, the parts restored to their former position, and the thumb-nuts d and n reapplied.

The slotting of the guide-plate D for the reception of the confining-bolt a is important,as it permits the adjustment of said guide-plate in respect to the standard B, which adjustment is rendered necessary by the fact that the standards are liable to vary in size and shape, owing to inequality in the shrinkage of the castings, and this, if the guide was not adjustable, would have a tendency to throw said guide out of line with the plunger rod, it being understood that the seats formed on the base Afor the reception of the pump-barrel and standard occupy a fixed relation to each other.

The plunger of the pump consists of a cupped washer, s, of leather, rubber, or like flexible material clamped between a cap-plate, t, and an internal notched spring-plate, w.

When the plunger is withdrawn from the barrel of the pump,the lower end of the washer s is expanded, so that its diameter is greater than the internal diameter of the barrel; hence difficulty would be experienced in inserting the plunger into the barrel of the pump in the absence of some provision for contracting the lower end of said washer, so that it will freely enter the barrel. This I accomplish by providing the barrel with a flaring top, a", the upper portion of which has an internal diameter greater than the external diameter of the expanded lower end of the washer s, as shown in Fig. 2, said top terminating below in an inter nal rib, y, the diameter of which is slightly less than that of the barrel of the pump. It will thus be seen that when the plunger is thrust down into the top of the barrel, the lower end of the washer s will be automatically contracted to such an extent that it will freely enter the barrel.

The flaring mouth and contracted internal ri 1 may be made by properly bending or swaging the metal of which the barrel of the pump is composed; but I prefer, for convenience, to provide said barrel with a separate mouth-piece, as shown.

Various modifications in the means of pivoting the lever J may be adopted without departing from my invention. Forinstance, a single link may be used instead of two links, as shown, and the pivot whereby the lever is hung to the link or links may be secured to said lever or to thelinks, the boltwhereby the hanging of the link or links to the stud h is effected, being removable, and thumb-screws may, as Will be evident, be substituted for the bolts with thumb-nuts.

In some cases it may be sufficient to have the guideplate D alone detachable, but it is preferred to make both the same and the operating-lever detachable for greater convenience.

pump-barrel having a flaring mouth, and an internal rib less in diameter than the barrel, as specified.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

THOS. KENNEDY.

Witnesses:

WILLIAM F. DAVIS, HARRY SMITH. 

